I am replying on an ASUS laptop computer using Windows 10.  At one time it
 was a backup to my desktop untill Windows 10 destroyed itself on my
 CyberpowerPC.  Windows 10 does updates without asking.  Having shut down to
 do a restart, after one update, it could not find itself.  That section is
  the part that tells Windows what the layout of the machine is. When this
 happens windows tries again.  It is a never-ending loop.    Booting to the
 BIOS and using backup on memory stick, the same error occurs.  This turned
 this powerful gaming machine into a boat anchor.